<template>
    <div class="cmt-container">
        <h3>发表评论</h3>

        <hr>

        <textarea placeholder="请输入评论的内容(最多120个字)" maxlength="120" v-model="msg"></textarea>
        <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
         <div class="cmt-list">
            <div class="cmt-item" v-for="(item,i) in comments" :key="item.add_time">
                <div class="cmt-title">
                   第{{i+1}}楼&nbsp;&nbsp;用户：{{item.user_name}}&nbsp;&nbsp;发表时间:{{item.add_time | dateFormat}}
                </div>
                <div class="cmt-body">
                    {{item.comment === 'undefined' ? '此用户很烂' : 'item.comment'}}
                </div>
            </div>
            <div class="cmt-item">
                <div class="cmt-title">
                   第一楼&nbsp;&nbsp;用户：匿名用户&nbsp;&nbsp;发表时间2021-2-6 23:17:25
                </div>
                <div class="cmt-body">
                    楚河汉界
                </div>
            </div>
            <div class="cmt-item">
                <div class="cmt-title">
                   第一楼&nbsp;&nbsp;用户：匿名用户&nbsp;&nbsp;发表时间2021-2-6 23:17:25
                </div>
                <div class="cmt-body">
                    楚河汉界
                </div>
            </div>
            <div class="cmt-item">
                <div class="cmt-title">
                   第一楼&nbsp;&nbsp;用户：匿名用户&nbsp;&nbsp;发表时间2021-2-6 23:17:25
                </div>
                <div class="cmt-body">
                    楚河汉界
                </div>
            </div>
            <div class="cmt-item">
                <div class="cmt-title">
                   第一楼&nbsp;&nbsp;用户：匿名用户&nbsp;&nbsp;发表时间2021-2-6 23:17:25
                </div>
                <div class="cmt-body">
                    楚河汉界
                </div>
            </div>
            <div class="cmt-item">
                <div class="cmt-title">
                   第一楼&nbsp;&nbsp;用户：匿名用户&nbsp;&nbsp;发表时间2021-2-6 23:17:25
                </div>
                <div class="cmt-body">
                    楚河汉界
                </div>
            </div>
            <div class="cmt-item">
                <div class="cmt-title">
                   第一楼&nbsp;&nbsp;用户：匿名用户&nbsp;&nbsp;发表时间2021-2-6 23:17:25
                </div>
                <div class="cmt-body">
                    楚河汉界
                </div>
            </div>
         </div>
        <mt-button type="danger" size="large" @click="getMore">加载更多</mt-button>
    </div>
</template>

<script>
export default {
    data() {
        return {
            pageIndex: 1,
            comments:[],
            msg:''
        }
    },
    methods:{
        getComment(){
            this.$http.get("api/getcomments/" + this.id + "?pageindex=" + this.pageIndex).then(result => {
                if(result.body.status === 0){
                   this.comments = this.comments.concat(result.body.message);
                }else{
                    Toast('评论获取失败')
                }
            });
        },
        getMore(){//加载更多
          this.pageIndex++;
          this.getComment();
        },
        postComment(){
            if(this.msg.trim().length === 0){
             return Toast('评论内容不能为空'); 
            }
            this.$http.post("api/postcomment/" + this.$route.params.id, {content:this.msg.trim()}).then(result => {
                if(result.body.status === 0){
                    var cmt = {user_name:"匿名用户",
                             add_time:Date.now(),
                             content:this.msg.trim()
                            }
                    this.comments.unshift(cmt);
                    this.msg = "";
                }
            })
        }
    },
    props:["id"]
}
</script>

<style lang="scss" scoped>
    .cmt-container{
        h3{font-size: 18px;}
        textarea{
            font-size: 14px;
            height: 85px;
            margin: 0;
        }

        .cmt-list{
            margin: 5px 0;
            .cmt-item{
                font-size: 13px;
                .cmt-title{
                   line-height: 30px;
                   background-color: #ccc;
                }
                .cmt-body{
                   line-height: 35px;
                   text-indent: 2em;
                }
            }
        }
        
        
    }
</style>